Wire box for light photovoltaic module

Abstract

The utility model relates to the technical field of photovoltaic modules, in particular to a wire box for a light photovoltaic module, which comprises a box body and a conductive connecting component arranged in the box body, and the conductive connecting component is welded with an electrode of the light photovoltaic module; the box body comprises a junction box head arranged at one end of the box body, a groove body is formed in the front surface of the box body, and a plurality of through holes are formed in the bottom surface of the groove body; the conductive connecting assembly comprises a diode and bonding pads, the bonding pads are connected through the diode, and the free end of each bonding pad is provided with a welding head extending out of the through hole in the bottom face of the groove body. The assembly efficiency of the wire box is improved, the wire box and the light photovoltaic module can be connected without a grafting head, the overall structure of the light photovoltaic module is simplified, and the failure rate is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic modules, and in particular to a wire box for a lightweight photovoltaic module. Background Art

[0002] Junction boxes are directly exposed to the elements, subject to long-term exposure to wind, rain, and sunlight. Furthermore, their small size and numerous internal components place significant demands on their weather resistance, sealing, and safety. Junction box problems are common during PV system operation. According to incomplete statistics, junction box failures account for the highest proportion of PV power plant failures. Therefore, the structure of the junction box is a key consideration when designing and selecting it.

[0003] Conventional lightweight photovoltaic modules require a junction box to be connected via a splice. This connection requires two welds to complete the connection. Any weld failure at either end can cause failure of the junction box and the entire lightweight photovoltaic module. Therefore, a junction box with a simple structure and low failure rate is urgently needed. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the present application provides a wire box for a lightweight photovoltaic module.

[0005] The present application provides a lightweight photovoltaic module junction box using the following technical solutions:

[0006] A junction box for a lightweight photovoltaic module comprises a box body and a conductive connection assembly arranged in the box body, wherein the conductive connection assembly is welded to the electrode of the lightweight photovoltaic module; the box body comprises a junction box head arranged at one end of the box body, a groove is provided on the front side of the box body, and a plurality of through-holes are provided on the bottom surface of the groove; the conductive connection assembly comprises a diode and a welding pad, wherein the welding pads are connected through the diode, and the free end of the welding pad is provided with a welding head extending out of the through-hole on the bottom surface of the groove.

[0007] By adopting this technical solution, the conductive connection components installed in the junction box are directly connected to the electrodes on the lightweight photovoltaic module via welding heads, eliminating the need for grafting heads. This simplifies the overall structure of the lightweight photovoltaic module and effectively reduces the failure rate. The junction box head at the end of the box is used to secure the installation cables. The cables are connected to the solder pads of the conductive connection components within the slots on the box surface. The solder pads are connected via diodes, which effectively prevent hot spot effects and improve the reliability and performance of the entire photovoltaic system.

[0008] Preferably, the edge of the soldering pad has no less than one folded edge, and the folded edge of the soldering pad is clamped in the strip grooves on both sides of the bottom of the groove body.

[0009] Preferably, a fixing hole connected to the bottom surface of the slot body is provided on the surface of the soldering pad, and a positioning block is provided on the bottom surface of the slot body to penetrate the fixing hole and fix the soldering pad on the bottom surface of the slot body.

[0010] By adopting the above technical solution, the edge of the soldering pad is connected to the strip groove in the slot body through the folding edge, which can improve the stability of the soldering pad in the slot body, and the fixing hole opened on the soldering pad can cooperate with the positioning block on the bottom surface of the slot body. By inserting the positioning block with an end diameter slightly larger than the fixing hole into the fixing hole, the various points of the soldering pad can be quickly fixed, effectively improving the assembly speed.

[0011] Preferably, the welding head is a metal sheet or metal strip integrally formed with the welding pad, and a metal layer is provided on its surface to facilitate welding.

[0012] Preferably, a through hole is provided on the connection surface between the welding head and the metal layer, and the through hole adopts a strip structure distributed along the length direction of the welding head.

[0013] By adopting the above technical solution, the welding head installed at the free end of the welding pad is formed integrally with the welding pad. The through hole provided on the connecting surface of the welding head and the metal layer can avoid a gap between the connection between the two, effectively improve the tightness of the connection between the two, and ensure the stable and normal operation of the junction box. The metal layer adopts an easy-to-weld structure to facilitate welding and fixing with lightweight photovoltaic modules.

[0014] Preferably, a groove for accommodating the cable is provided at the bottom of the junction box head of the box body, and a fixing piece for fixing the cable to the box body is installed on the groove.

[0015] Preferably, the groove runs through the side of the groove body, wherein the bottom surface of the groove is provided with a cable placement groove and card slots on both sides of the cable placement groove opening, and the fixing part includes a cable fixing groove whose center is in contact with the cable and card blocks on both sides that are engaged with the card slot.

[0016] By adopting the above technical solution, the groove at the bottom of the junction box head is used to place the cable, and the cable is clamped and fixed by the cable fixing groove on the fixing part, and the card slot at the bottom of the fixing part is fixed, which facilitates the assembly between the cable and the box body in the production line and improves the assembly efficiency. The opening is set at the bottom of the box body, and the bottom is used to be fixed with the lightweight photovoltaic module, which can further provide the overall stability of the lightweight photovoltaic module.

[0017] Preferably, sealing grooves are distributed in an annular shape on the bottom of the box body, and the sealing grooves are distributed in an annular shape on the bottom edge of the box body.

[0018] By adopting the above technical solution, the annular sealing grooves at the bottom of the box body can accommodate more glue during the glue pouring process, thereby improving the connection strength between the box body and the lightweight photovoltaic module.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. This application uses the welding head of the conductive connection assembly installed in the box to directly connect to the electrodes on the lightweight photovoltaic module, without the need for a grafting head, which simplifies the overall structure of the lightweight photovoltaic module and effectively reduces the failure rate;

[0021] 2. This application is quickly assembled by pressing the through-holes on the soldering pad and the positioning blocks on the bottom of the slot body. The grooves on the bottom of the junction box head are used to place cables, and the cables are clamped and fixed by the cable fixing grooves on the fixing parts, which can facilitate the assembly of the junction box in the production line and effectively improve the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a junction box for a lightweight photovoltaic module;

[0023] Figure 2 This is a schematic diagram of the back structure of a lightweight photovoltaic module junction box;

[0024] Figure 3 The present invention is a schematic diagram of the structure for removing the back fixing parts of a junction box for a lightweight photovoltaic module.

[0025] Explanation of the accompanying drawings: 1. Box body; 11. Junction box head; 12. Slot body; 121. Perforation; 122. Strip groove; 123. Positioning block; 13. Groove; 131. Cable placement groove; 132. Card slot; 14. Fixing piece; 141. Cable fixing groove; 142. Card block; 15. Sealing groove; 2. Conductive connection component; 21. Diode; 22. Soldering pad; 221. Welding head; 2211. Metal layer; 2212. Through hole; 222. Folding edge; 223. Fixing hole. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 This application is described in further detail.

[0027] The embodiments of the present application disclose a wire box for a lightweight photovoltaic module.

[0028] Reference Figure 1 、 Figure 2 and Figure 3A junction box for a lightweight photovoltaic module includes a box body 1 and a conductive connection component 2 disposed within the box body 1, the conductive connection component 2 being welded to the electrodes of the lightweight photovoltaic module. The box body 1 includes a junction box head 11 disposed at one end of the box body 1, a slot 12 being formed on the front of the box body 1, and a plurality of through-holes 121 being formed on the bottom surface of the slot 12. The conductive connection component 2 includes a diode 21 and a soldering pad 22, wherein the soldering pads 22 are connected to each other via the diode, and the free end of the soldering pad 22 is provided with a soldering head 221 extending through the through-holes 121 on the bottom surface of the slot 12. The conductive connection component 2 installed within the box body 1 of the junction box is directly connected to the electrodes on the lightweight photovoltaic module via the soldering head 221, without the need for a grafting head, thereby simplifying the overall structure of the lightweight photovoltaic module and effectively reducing the failure rate. The junction box head 11 at the end of the box body 1 is used to fix and install cables. The cables are connected to the groove 12 opened on the surface of the box body 1 and connected to the pads 22 of the conductive connection component 2. The pads 22 are connected through diodes. The diodes can effectively prevent the hot spot effect and improve the reliability and performance of the entire photovoltaic system.

[0029] Reference Figure 1 The edge of the pad 22 has no less than one folded edge 222, and the folded edges 222 of the pad 22 are snapped into the strip grooves 122 on both sides of the bottom of the tank body 12. A fixing hole 223 connected to the bottom surface of the tank body 12 is provided on the surface of the pad 22, and a positioning block 123 is provided on the bottom surface of the tank body 12 to penetrate the fixing hole 223 and fix the pad 22 to the bottom surface of the tank body 12. The edge of the pad 22 is connected with the strip groove 122 in the tank body 12 through the folded edge 222, which can improve the stability of the pad 22 in the tank body 12, and the fixing hole 223 provided on the pad 22 can cooperate with the positioning block 123 on the bottom surface of the tank body 12. By snapping the positioning block 123, whose end diameter is slightly larger than the fixing hole 223, into the fixing hole 223, the various points of the pad 22 can be quickly fixed, effectively improving the assembly speed.

[0030] Reference Figure 1 、 Figure 2 and Figure 3 The welding head 221 is a metal sheet or metal strip integrally formed with the pad 22, and its surface is provided with a metal layer 2211 for easy welding. Through holes 2212 are provided on the connection surface between the welding head 221 and the metal layer 2211. The through holes 2212 are arranged in a strip-shaped structure distributed along the length of the welding head 221. The welding head 221 installed at the free end of the pad 22 is integrally formed with the pad 22. The through holes 2212 provided on the connection surface between the welding head 221 and the metal layer 2211 can avoid any gap between the connection between the two, effectively improving the tightness of the connection between the two and ensuring the stable and normal operation of the junction box. The metal layer 2211 adopts an easy-to-weld structure to facilitate welding and fixing with lightweight photovoltaic modules.

[0031] Reference Figure 2 and Figure 3The bottom of the junction box head 11 of the box body 1 is provided with a groove 13 for accommodating cables, and a fixing part 14 for fixing the cables to the box body 1 is installed on the groove 13. The groove 13 runs through the side of the groove body 12, wherein the bottom surface of the groove 13 is provided with a cable placement groove 131 and a card slot 132 on both sides of the opening of the cable placement groove 131. The fixing part 14 includes a cable fixing groove 141 whose center is in contact with the cable and a card block 142 on both sides that engages with the card slot 132. The groove 13 provided at the bottom of the junction box head 11 is used to place the cable, and the cable is clamped and fixed by the cable fixing groove 141 provided on the fixing part 14, and the card slot 132 at the bottom of the fixing part 14 cooperates to fix it, which facilitates the assembly between the cable and the box body 1 in the production line and improves the assembly efficiency. In addition, the opening is set at the bottom of the box body 1, and the bottom is used to be fixed with the lightweight photovoltaic module, which can further provide the overall stability of the lightweight photovoltaic module.

[0032] Reference Figure 2 and Figure 3 The bottom of the box body 1 is provided with a sealing groove 15 in an annular shape, and the sealing groove 15 is annularly distributed at the bottom edge of the box body 1. The sealing groove 15 in an annular shape at the bottom of the box body 1 can accommodate more glue during the glue pouring process, thereby improving the connection strength between the box body 1 and the lightweight photovoltaic module.

[0033] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lightweight photovoltaic module junction box, characterized by: The invention comprises a box body (1) and a conductive connection component (2) arranged in the box body (1), wherein the conductive connection component (2) is welded to the electrode of the lightweight photovoltaic component; the box body (1) comprises a junction box head (11) arranged at one end of the box body (1); a slot body (12) is provided on the front surface of the box body (1), and a plurality of through-holes (121) are provided on the bottom surface of the slot body (12); the conductive connection component (2) comprises a diode (21) and a welding pad (22), wherein the welding pads (22) are connected to each other through the diode, and the free end of the welding pad (22) is provided with a welding head (221) extending out of the through-hole (121) on the bottom surface of the slot body (12).

2. The lightweight photovoltaic module wiring box according to claim 1, characterized in that: The edge of the soldering pad (22) has no less than one folded edge (222), and the folded edge (222) of the soldering pad (22) is clamped in the strip grooves (122) on both sides of the bottom of the groove body (12).

3. The lightweight photovoltaic module wiring box according to claim 2, characterized in that: The surface of the soldering pad (22) is provided with a fixing hole (223) connected to the bottom surface of the tank body (12), and the bottom surface of the tank body (12) is provided with a positioning block (123) that penetrates the fixing hole (223) and fixes the soldering pad (22) to the bottom surface of the tank body (12).

4. The lightweight photovoltaic module wiring box according to claim 1, characterized in that: The welding head (221) is a metal sheet or metal strip integrally formed with the welding pad (22), and a metal layer (2211) is provided on its surface to facilitate welding.

5. The lightweight photovoltaic module cable box according to claim 4, characterized in that: A through hole (2212) is provided on the connection surface between the welding head (221) and the metal layer (2211), and the through hole (2212) adopts a strip structure distributed along the length direction of the welding head (221).

6. The lightweight photovoltaic module cable box according to claim 1, characterized in that: A groove (13) for accommodating cables is provided at the bottom of the junction box head (11) of the box body (1), and a fixing member (14) for fixing the cables to the box body (1) is installed on the groove (13).

7. The lightweight photovoltaic module wiring box according to claim 6, characterized in that: The groove (13) passes through the side of the groove body (12), wherein the bottom surface of the groove (13) is provided with a cable placement groove (131) and clamping grooves (132) on both sides of the opening of the cable placement groove (131), and the fixing member (14) includes a cable fixing groove (141) whose center is in contact with the cable and clamping blocks (142) on both sides that are clamped and matched with the clamping groove (132).

8. The lightweight photovoltaic module junction box according to claim 1, characterized in that: The bottom of the box body (1) is provided with sealing grooves (15) distributed in an annular manner, and the sealing grooves (15) are distributed in an annular manner at the bottom edge of the box body (1).

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